barnhart: genera in lentibulariaceae 45 



Seed-characters have been made use of in so far as present knowl- 

 edge permits, in the classification here proposed; but no genus 

 has been based exclusively, or even primarily, upon seed-charac- 

 ters, for these differ too strikingly in the case of some plants 

 evidently very closely related. As an example may be mentioned 

 the genus Meloneura, where one species has the seeds with a tuft 

 of simple hairs at each end, while those of the other species bear 

 scattered "glochidiate" (anchor-shaped) hairs, giving the seed 

 an appearance much like the statoblast of the fresh-water bryozoan 

 Cristatella. 



In Small's "Flora of Miami" and in the second edition of 

 Britton & Brown's "Illustrated flora," both published in 1913, 

 my views upon generic segregation in this family were presented 

 to the botanical public as clearly as the limited scope of those 

 works would permit; but those views were not based upon a 

 study of North American species only, and it has seemed desirable 

 to place on record at least an outline of my more or less tentative 

 scheme of classification for the entire family, I have therefore 

 prepared the present discussion, and append diagnoses of each of 

 the sixteen genera I am now prepared to recognize, with brief 

 notes upon each genus, and a generic key. 



CONSPECTUS LENTIBULARIACEARUM 

 LENTIBULARIACEAE 



Herbae annuae vel perennes, aquaticae vel terrestres, plerumque 

 hydrophilae. Folia alterna vel conferta vel rosulata, integra vel 

 dissecta, saepe radiciformia, interdum nulla. Inflorescentia sca- 

 posa, raro ramosa. Flores solitarii vel racemosi, interdum sub- 

 spicati, monoclini, zygomorphi. Calyx inferior, gamosepalus, 

 2-5-lobatus, persistens. Corolla hypogyna, gamopetala, antice 

 calcarata; limbus interdum subaequaliter 5-lobatus, sed saepissime 

 valde 2-labiatus; labium superius vero ex 2, inferius ex 3 lobis 

 coalitis formatum. Androecium staminibus 2 distinctis ad basin 

 corollae tubi insertis; filamenta plerumque arcuata, saepe praeterea 

 contorta; antherae uniloculares. Gynoecium ovario solitario uni- 

 loculare superiore; placenta libera centralis e basi enata; ovula 

 plerumque numerosa raro tantummodo 2; stylus plerumque 

 brevis crassusque, saepe subobsoletus; stigma valde bilabiatum, 



